Finding the Fourth Proportional to 73,928, 102,024.28 and 42,099.86

Step by Step Solution

1. Step 1: Write the proportion equation
   73,928 : 102,024.28 = 42,099.86 : x
2. Step 2: Convert to fraction form
   73,928/102,024.28 = 42,099.86/x
3. Step 3: Cross multiply
   73,928x = 102,024.28 × 42,099.86
4. Step 4: Simplify right side
   73,928x = 4,295,207,904.60
5. Step 5: Solve for x
   x = 4,295,207,904.60/73,928
6. Step 6: Final answer
   x = 58,099.88